Mattress-support for bedsteads.



No. 7l0,697. Patented Oct. 7, I902.

J. KOCH.

MATTRESS SUPPORT FOR BEDSTEADS.

(Application filed Oct. 28, 1901.) (No Model.) 3 Shegts-3heet I.

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0w I J I h z Jzfozwgg No. 710,697. Patented Oct. 7, I902.

J. KOCH.

MATTRESS SUPPORT FOR BEDSTEADS.

(Application filed Oct. 28, 1901.) (No ModeL) 3 Sheets-Sheet 2.

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No. 7l0,697 Patented Dot. 7, I902.

J. KOCH.

MATTRESS SUPPORT FOR BEDSTEADS.

(Application filed Oct. 28, 1901.)

(No Model.) 3 Sheets-Sheet 3.

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UNTTEE STATES PATENT OFFICE.

JOSEPH KOCH, OF CHICAGO, ILLINOIS.

MATTRESS-SUPPORT FOR BEDSTEADS.

SPECIFICATION forming part of Letters Patent No. 710,697, dated October 7, 1902.

Application filed October 28, 1901- Serial No. 80,268. (No model.)

To (all whom, it may concern.-

Be it known that I, JOSEPH KOCH, a citizen of the United States, residing at Chicago, in the countyof Cook and State of Illinois, have invented certain new and useful Improvements in Mattress-Supports for Bedsteads; and I do hereby declare the following to be a full, clear, and exact description of the in vention, such as will enable others skilled in the artto which it appertains to make and use the same.

My invention relates to a novel construction in a mattress-support for bedsteads, the object being to provide a device which will increase the cushion effect of a mattress and which will equalize the pressure exerted by various weights on different parts of the mattress.

IVith the above objects in view the invention consists in the construction and combination of parts hereinafter fully described and claimed.

In the accompanying drawings, illustrating my invention, Figure 1 is a view in side elevation of a bedstead containing my improvement, parts being broken away. Fig. 2 is a transverse sectional view on the line 2 2 of Fig. 1. Fig. 3 is a view similar to Fig. 1, showing a modified form of the present invention. Fig. 4 is a-plan section taken on line 4 e of Fig. l, and Fig. 5 is a fragmentarydetail section on the line 5 5 of Fig. 4.

In the accompanying drawings, A indicates the transversely-arranged end bars of the mattress-supporting frame, said bars having their ends terminating in downwardly-extending portions N, adapted to engage the side bars B of the bedstead. The said end bars A are connected by the central longitudinal beams C C, which are spaced apart and between which the levers D D are movable. These levers are pivotally mounted between the said beams C C and are provided at their lower ends with spur-gear segments E, concentric with said pivots and meshing with each other, so as to cause said levers to move in unison. At their upper ends said levers are secured to transversely-arranged rods F, provided at their ends with antifriction-rollers. The antifriction-rollers engage the side rails of the wire mattress H. The outer ends of the rods F are arranged in longitudinal slots I in the side rails G, said slots being of such length as to be engaged at their ends by the said rods at either limit of motion of said mattress, thereby preventinglongitudinal motion of said mattress when the occupant of the bed moves.

The levers D are normally held so that their upper ends are at the upper limit of their movement by means of tension-springs J, secured at their inner ends to the gear-segments E and at their outer ends to the downwardly-extending centrally-arranged arms N of the end bars A and by means of a spring K, interposed between said levers above the pivots thereof, as clearly shown in Figs. 1 and 4 of the drawings.

In the modified form of my device shown in Fig. 3 I provide the lower end of one of the leversD with a longitudinal slot L, which is engaged by a pin M, secured on the other lever, whereby the said levers are caused to move in unison, this construction being capable of substitution for the gear-segments shown in Fig. 1.

My invention is particularly designed for use in hospitals, where it is desirable in certain cases to weigh patients. To effect this, a rod N, carrying a pointer O, is secured to one end of the mattress-frame and a scale I, mounted thereabove, to the adjacent end of the bedstead, by which arrangement the pointer will indicate upon the scale the weight of the occupant.

I claim as my invention A mattresssupport comprising a frame, two levers pivotally mounted therein, gearing between said levers to cause the same to move in unison, springs engaging said levers to hold same normally in one position, a crossbar at one end of each lever, trunnions on the ends of said cross-bars, carrying antifriction-rollers, said trunnions projecting beyond said rollers, a mattress-frame resting upon said antifriction-rollers, and slots in the rails of said mattress-frame into which said trunnions project, said slots being adapted to limit the movements of said levers, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

JOSEPH KOCH.

Vitnesses:

RUDOLPH WM. Lorz, JOHN SNOWHOOK. 

